Arrangement for breaking and loading coal in coal mines



Dec. 19, 1922. 1,439,666

s. 0. FOSS. ARRANGEMENT FOR BREAKING AND LOADING COAL IN COAL MINES.

FILED MAY 8,1920- 2 SHEETS- SHEET I.

w'me/sfgrs Lin Patented net. is, 1922.

earns SIGUBD OLAF FOSS, OF CHRISTIANIA, NORWAY.

ARRANGEMENT FOR BREAKING AiN 'D LOADING COAL IN COAL MINES.

Application filed May 3, 1920. Serial No. 379,842.

To all whom it may concern:

had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

The known methods and arrangements for mechanically breaking and loading coal in coal mines are adapted for comparatively thick seams only, and the scope of their practical utility for this reason is limited. I

The present invention has for its object a'method and arrangement for mechanically breaking and loading coal, adapted for thin seams.

According to the present invention the coal seam'is undercut in a long wall of the seam. I In the undercut there is mounted or fastened a'feed chain parallel to the wall along the front of which a conveyor is lo-' cated for carrying the coal to'the gate road. An apparatus for breaking loose the coal layer above the undercut is attached to said feed chain and works along the undercut part breaking loose the coal and loading it sideways on to the conveyor. The conveyor takes the coal from the cross cut to the gate road, where it is loaded automatically on railway cars or the like, carrying the same to the elevators or to the mine entrance.

On the drawing is diagrammatically 1llus tratcd a practical embodiment ofthe mvention.

Fig. l is a section through the seam of a coal mine in front of a long wall.

' l ig. i2 is a plan of the coal breaking and loading machine. Fig. 3 is a transverse section of the seam wall illustrating diagrammatically the breaking and loading machine.

Fig. 4: is a horizontal section on a smaller scale through the seam of a coal mine, provided with the arrangements according to the inventlon.

The general application of theinvention Fig. 4..

l is a gate road and 2 a cross-cut in a coal-mine. The gate road 1 is provided with a railway 3, and in the cross out there is mounted a conveyor 4, said conveyor being placed near one wall 5 ofthe cross cut 2.

The said wall 5 of the cross cut is undercut by' the usual means at the bottom of the cross cut and to the depth of say four feet.

At the bottom of the undercut there is placed a chain 6, fastened at the inner end by means of a stay or the like 7. The feed chain is run through the mechanically driven feeding mechanism of a rock breaking and loading machine 8, adapted to work its way along the undercut, breaking loose the coal and loading it sideways on to the conveyor 4. I

This machine is seen on Figures 1, and

3. The machine comprises an ordinary chain feeding mechanism diagrammatically indicated at Qand driven by means of an electric 'motor'l0. This mechanism grips the chain and serves to haul the machine 8 along the same. r

At the front end of the machine there is placed a pneumatically or otherwise oper ated breaking or drilling tool 11, controlled by an operator. Also at the innermost side "ofthe machine there is located a saw or the like for cutting the seam along the inner end of the undercut.

Two belt conveyors 13, 14 run from the front end 15 of the machine backwards, conveying the loose coal past the operator and placing it on a transverse conveyor 16, serving to load coal on to the main conveyor 4 as indicated on Fig. 3.

An arrangement for breaking and loading coahcomprising a coal cutting and loadii f, machine. and a chain mounted in an undercut along a seam wall, said chain being cngaged "by the cutting and loading machine for enabling the same to perform a feeding movement.

In testimony that Iclaiin the foregoing .will be best understood by reference to asmy invention, I have signed my name in presence of. two subscribing witnesses.

SIGURD OLAF FOSS.

lVi'tnessesf Ronnnr H. Fnnzrnn,

. y 13. Cook; 

